Finding the Fourth Proportional to 1,058.01, 1,459.98 and 615.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058.01 : 1,459.98 = 615.89 : x
2. Step 2: Convert to fraction form
   1,058.01/1,459.98 = 615.89/x
3. Step 3: Cross multiply
   1,058.01x = 1,459.98 × 615.89
4. Step 4: Simplify right side
   1,058.01x = 899,179.78
5. Step 5: Solve for x
   x = 899,179.78/1,058.01
6. Step 6: Final answer
   x = 849.88